package com.pshare.wx.tool;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.ConnectException;
import java.net.URL;
import java.util.Map;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.servlet.http.HttpServletRequest;

import org.jdom.JDOMException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * 通用工具类
 * 
 */
public class CommonUtil {

	private static Logger log = LoggerFactory.getLogger(CommonUtil.class);

	/**
	 * 发送https请求
	 * 
	 * @param requestUrl 请求地址
	 * @param requestMethod 请求方式（GET、POST）
	 * @param outputStr 提交的数据
	 * @return 返回微信服务器响应的信息
	 */
	public static String httpsRequest(String requestUrl, String requestMethod, String outputStr) {
		try {
			// 创建SSLContext对象，并使用我们指定的信任管理器初始化
			TrustManager[] tm = { new MyX509TrustManager() };
			SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
			sslContext.init(null, tm, new java.security.SecureRandom());
			// 从上述SSLContext对象中得到SSLSocketFactory对象
			SSLSocketFactory ssf = sslContext.getSocketFactory();
			URL url = new URL(requestUrl);
			HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
			conn.setSSLSocketFactory(ssf);
			conn.setDoOutput(true);
			conn.setDoInput(true);
			conn.setUseCaches(false);
			// 设置请求方式（GET/POST）
			conn.setRequestMethod(requestMethod);
			conn.setRequestProperty("content-type", "application/x-www-form-urlencoded");
			// 当outputStr不为null时向输出流写数据
			if (null != outputStr) {
				OutputStream outputStream = conn.getOutputStream();
				// 注意编码格式
				outputStream.write(outputStr.getBytes("UTF-8"));
				outputStream.close();
			}
			// 从输入流读取返回内容
			InputStream inputStream = conn.getInputStream();
			InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
			BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
			String str = null;
			StringBuffer buffer = new StringBuffer();
			while ((str = bufferedReader.readLine()) != null) {
				buffer.append(str);
			}
			// 释放资源
			bufferedReader.close();
			inputStreamReader.close();
			inputStream.close();
			inputStream = null;
			conn.disconnect();
			return buffer.toString();
		} catch (ConnectException ce) {
			log.error("连接超时：{}", ce);
		} catch (Exception e) {
			log.error("https请求异常：{}", e);
		}
		return null;
	}

	/**
	 * 获取接口访问凭证
	 * 
	 * @param appid 凭证
	 * @param appsecret 密钥
	 * @return
	 */
	// public static Token getToken(String appid, String appsecret) {
	// Token token = null;
	// String requestUrl = ConfigUtil.TOKEN_URL.replace("TOKEN",
	// appid).replace("APPSECRET", appsecret);
	// // 发起GET请求获取凭证
	// JSONObject jsonObject = JSONObject.fromObject(httpsRequest(requestUrl,
	// "GET", null));
	//
	// if (null != jsonObject) {
	// try {
	// token = new Token();
	// token.setAccessToken(jsonObject.getString("access_token"));
	// token.setExpiresIn(jsonObject.getInt("expires_in"));
	// } catch (JSONException e) {
	// token = null;
	// // 获取token失败
	// log.error("获取token失败 errcode:{} errmsg:{}", jsonObject.getInt("errcode"),
	// jsonObject.getString("errmsg"));
	// }
	// }
	// return token;
	// }

	public static String urlEncodeUTF8(String source) {
		String result = source;
		try {
			result = java.net.URLEncoder.encode(source, "utf-8");
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		}
		return result;
	}

	public static Map<String, String> getParamsFromRequest(HttpServletRequest request) {
		InputStream inputStream = null;
		InputStreamReader inputStreamReader = null;
		BufferedReader bufferedReader = null;
		try {
			request.setCharacterEncoding("utf-8");
			inputStream = request.getInputStream();
			inputStreamReader = new InputStreamReader(inputStream, "utf-8");
			bufferedReader = new BufferedReader(inputStreamReader);
			String str = null;
			StringBuffer buffer = new StringBuffer();
			while ((str = bufferedReader.readLine()) != null) {
				buffer.append(str);
			}
			
			return XMLUtil.doXMLParse(buffer.toString());
		} catch (IOException | JDOMException e) {
			log.error(e.getMessage(), e);
		} finally {
			// 释放资源
			if (inputStreamReader != null) {
				try {
					inputStreamReader.close();
				} catch (IOException e) {
					log.error(e.getMessage(), e);
				}
			}
			if (bufferedReader != null) {
				try {
					bufferedReader.close();
				} catch (IOException e) {
					log.error(e.getMessage(), e);
				}
			}
			if (inputStream != null) {
				try {
					bufferedReader.close();
					inputStream.close();
				} catch (IOException e) {
					log.error(e.getMessage(), e);
				}
				inputStream = null;
			}
		}
		return null;
	}
}